Home / 656,953.20-985,429.80-213,721.20

Finding the Fourth Proportional to 656,953.20, 985,429.80 and 213,721.20

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Solution

The fourth proportional to 656,953.20, 985,429.80 and 213,721.20 is: 320,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,953.20 : 985,429.80 = 213,721.20 : x
  2. Step 2: Convert to fraction form
    656,953.20/985,429.80 = 213,721.20/x
  3. Step 3: Cross multiply
    656,953.20x = 985,429.80 × 213,721.20
  4. Step 4: Simplify right side
    656,953.20x = 210,607,239,371.76
  5. Step 5: Solve for x
    x = 210,607,239,371.76/656,953.20
  6. Step 6: Final answer
    x = 320,581.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.